Stefani is the lead vocalist for the rock group No Doubt, which she formed in 1987 with her brother Eric Stefani and John Spence. The band signed with Interscope Records in 1991 and made two albums before the breakthrough Tragic Kingdom (1995), which reached number one on Billboard's chart and earned two Grammy Award nominations. Her first solo album, Love. Angel. Music. Baby in 2004 produced the hit single “Hollaback Girl.” There is talk of a reunion album with No Doubt for an album to be released in 2007.